Air - Speed of Sound vs. Temperature

Air - Speed of Sound vs. Temperature - Imperial Units
Temperature - t - (^oF)	Speed of Sound - c - (ft/s)
-40	1004
-20	1028
0	1051
10	1062
20	1074
30	1085
40	1096
50	1106
60	1117
70	1128
80	1138
90	1149
100	1159
120	1180
140	1200
160	1220
180	1239
200	1258
300	1348
400	1431
500	1509
750	1685
1000	1839
1500	2114

Air - Speed of Sound vs. Temperature - SI Units
Temperature - t - (^oC)	Speed of Sound - c - (m/s)
-40	306.2
0	331.4
5	334.4
10	337.4
15	340.4
20	343.3
25	346.3
30	349.1
40	354.7
50	360.3
60	365.7
70	371.2
80	376.6
90	381.7
100	386.9
200	434.5
300	476.3
400	514.1
500	548.8
1000	694.8

Speed of Sound in Air and Relative Humidity

For full table - rotate the screen!

Air - Speed of Sound vs. Relative Humidity
Temperature (°C) Load Calculator!	Speed of Sound (m/s) Load Calculator!
	Relative Humidity (%)
	10	20	30	40	50	60	70	80	90
0	331.5	331.5	331.5	331.6	331.6	331.6	331.7	331.7	331.7
5	334.5	334.6	334.6	334.7	334.7	334.7	334.8	334.8	334.9
10	337.5	337.6	337.7	337.7	337.8	337.9	337.9	338.0	338.0
15	340.5	340.6	340.7	340.8	340.9	341.0	341.1	341.2	341.2
20	343.5	343.6	343.7	343.9	344.0	344.1	344.2	344.4	344.5
25	346.4	346.6	346.8	347.0	347.1	347.3	347.5	347.6	347.8
30	349.4	349.6	349.9	350.1	350.3	350.5	350.8	351.0	351.2

Calculate the Speed of Sound in Air vs. Temperature

The velocity of sound can be calculated in metric units as

v_ms = 20.05 (273.16 + t_C)^1/2 (1)

where

v_ms = velocity of sound (m/s)

t_C = temperature (°C)

Velocity of sound in Imperial units:

v_fts = 49.03 (459.7 + t_F)^1/2 (2)

where

v_fts = velocity of sound (ft/s)

t_F = temperature (°F)

Note that speed is a scalar quantity. Velocity is vector quantity with direction.

Related Documents

Air - Composition and Molecular Weight

Dry air is a mechanical mixture of nitrogen, oxygen, argon and several other gases in minor amounts.

Air - Density vs. Pressure and Temperatures

Air density at pressure ranging 1 to 10 000 bara (14.5 - 145000 psi) and constant selected temperatures.

Air - Density, Specific Weight and Thermal Expansion Coefficient vs. Temperature and Pressure

Online calculator, figures and tables showing density, specific weight and thermal expansion coefficients of air at temperatures ranging -100 to 1600 °C (-140 to 2900 °F) at atmospheric and higher pressure - Imperial and SI Units.

Air - Diffusion Coefficients of Gases in Excess of Air

Diffusion coefficients (D₁₂) for gases in large excess of air at temperatures ranging 0 - 400 °C.

Air - Molecular Weight and Composition

Dry air is a mixture of gases where the average molecular weight (or molar mass) can be calculated by adding the weight of each component.

Air - Prandtl Number

Prandtl number for air vs. temperature and pressure.

Air - Properties at Gas-Liquid Equilibrium Conditions

Properties of air change along the boiling and condensation curves (temperature and pressure between triple point and critical point conditions). An air phase diagram included.

Air - Thermal Conductivity vs. Temperature and Pressure

Online calculator with figures and tables showing air thermal conductivity vs. temperature and pressure. SI and imperial units.

Air - Thermal Diffusivity vs. Temperature and Pressure

Figures and tables withdry air thermal diffusivity vs. temperarure and pressure. SI and Imperial units.

Air - Thermophysical Properties

Thermal properties of air at different temperatures - density, viscosity, critical temperature and pressure, triple point, enthalpi and entropi, thermal conductivity and diffusivity and more.

Dry Air - Thermodynamic and Physical Properties

Thermodynamic properties of dry air - specific heat, ratio of specific heats, dynamic viscosity, thermal conductivity, Prandtl number, density and kinematic viscosity at temperatures ranging 175 - 1900 K.